The rows.find() method returns the row with the specified id.
Search using row id:
DayPilot.Scheduler.rows.find(id[, start]);
Search using a function (since version 2019.4.4153):
DayPilot.Scheduler.rows.find(f[, startIndex]);
Find function syntax:
function f(row) {}
Find function parameters:
DayPilot.Row object if the row is found, otherwise null